Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 40/84 of 7/8?"
4084 × 78 is 512.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/84×7/8 40/84×14/8 40/84×7/16 40/84×21/8 40/84×7/24 40/84×35/8 40/84×7/40 40/84×49/8 40/84×7/56
© everydaycalculation.com